Read the passage and answer the questions in A and B below.
Despite our knowledge that children whose language development is below the normal standard for their age are at very high risk of educational, social, and emotional problems, we still do not know exactly how helpless newborns essentially master their language in only four years.
The earliest theory of language development explained that a baby makes random sounds, and the adults around him “shape” those sounds by rewarding those closest to words. For example, the baby would frequently babble “mama” at an early age, and every time he did so his mother would appear. He would eventually link the word with her. The great linguist Noam Chomsky, however, rejected this view in the 1950s and 1960s. His theory put forth the idea that children are born with (A)an innate capacity for language learning and when hearing language automatically begin to use what he called a “language acquisition device (LAD)” to help them make sense out of what they hear, and later on to help them to put sentences together for themselves. He considered that the amount of language the child was exposed to and the kind of language the child heard was of little importance. According to Chomsky, we are born with a natural knowledge of grammatical rules. For example, we already know 〜
２．We can infer from the passage that (A)an innate capacity is ( ).
a．due to environment b．learned from parents
c．present from birth d．None of the above